Water dumbbells can used to make any workout a little bit harder or in some cases a little bit easier when you're working out in the water. When you're using water dumbbells make sure that you have dumbells that are suitable for your ability level. They come in all different weights.
When you use water dumbbells for any of the arm exercises that you do you want to make sure that you keep them in the water. If you bring them out of the water it defeats the purpose. So you want to keep them in the water for any of the moves that you do.
You can even use them to make your cardio workouts a little bit harder, too, such as jumping jacks. So you can use water dumbbells when you're doing any of your cardio stuff.
You can also use water dumbbells for ab exercises. You can put them under your knees. Or you can also - if I was in the pool I would stand on this with both feet and lift both feet up to my chest. So you can be very creative with water dumbbells. They're used for a lot of different things. The most important thing is to make sure they fit your ability level. And you keep them in the water when you're doing your arm exercises. So add them into any routine to make it a little harder or a little bit easier.